Most federal drug cases start with conversations. Agents listen to calls, read texts, and map out who talked to whom. Sometimes the government charges the drug deal itself, meaning distribution or conspiracy. Sometimes it also charges the conversations, meaning one count for conduct carried out over the phone, by mail, or by wire. That second kind of charge is unlawful use of a communication facility, and it surprises a lot of people. Nothing changed hands in the call. Nobody was arrested with drugs because of the call. But the call itself is the crime charged.
If you are reading this because you or someone you love just saw this charge on an indictment, take a breath. This page walks through the law in plain terms: what the government has to prove, what the punishment can be, how judges calculate sentences, how this charge differs from the drug charges next to it, and the defenses lawyers actually raise. Numbers here are statutory maximums and guideline ranges, not predictions. The facts of a case change everything.
What the government must prove under § 843(b)
The statute, 21 U.S.C. section 843(b), says:
"It shall be unlawful for any person knowingly or intentionally to use any communication facility in committing or in causing or facilitating the commission of any act or acts constituting a felony under any provision of this subchapter or subchapter II."
That one sentence holds the whole charge. Breaking it down, the government must prove three things, and the Eleventh Circuit's model jury instructions for this offense list them in exactly this shape: the person used a communication facility, the person used it while committing or helping to commit a specific drug crime, and the person acted knowingly and intentionally. Each point needs proof beyond a reasonable doubt.
Notice what the charge is built around. The phone call is not the whole case. There must be an underlying felony drug offense, such as distribution or possession with intent to distribute, that the communication helped bring about. The government has to connect the call to that crime. A call about nothing criminal, or a call the government cannot tie to a drug felony, does not satisfy the statute.
The words knowingly and intentionally matter too. An accidental call, a borrowed phone used without your knowledge, or a conversation you did not understand to be about drugs all go to whether you acted with the required state of mind. The government cannot convict on carelessness. It must show you knew what you were doing and meant to do it.
One more feature of the instruction is worth knowing. According to the Eleventh Circuit's model instructions, to help commit a crime means to use the facility in a way that makes committing the crime easier or possible, and it does not matter whether the other crime was actually carried out. So the government does not have to prove the drug deal succeeded. The instruction's annotations add that where the underlying charge is a completed drug offense rather than an attempt or conspiracy, the government must prove that offense. A failed deal arranged by phone can still support the phone charge if the call made a drug felony attempt or conspiracy easier.
What counts as a communication facility
Congress defined the term broadly. The statute says a communication facility is:
"any and all public and private instrumentalities used or useful in the transmission of writing, signs, signals, pictures, or sounds of all kinds and includes mail, telephone, wire, radio, and all other means of communication"
That covers cell phones, landlines, text messages, email, mail, and radio. The Eleventh Circuit's model instructions add that the term includes computer based communication systems, which reaches messages sent over the internet. Practically any way two people can talk or write to each other can qualify. Arguments that a particular app or device is somehow outside the statute rarely go anywhere, because the definition was written to cover all other means of communication.
What matters far more than the device is what the communication did. Two people chatting about the weather on a tapped line have used a communication facility, but they have not committed this offense, because no drug felony was committed or facilitated. Defense work in these cases usually focuses less on the phone and more on the link between the phone and the crime.
Each call can be its own charge
The statute contains a sentence that shapes every one of these cases:
"Each separate use of a communication facility shall be a separate offense under this subsection."
One call can mean one count. Ten calls can mean ten counts. Indictments in wiretap investigations sometimes list dozens of phone counts next to one conspiracy count, and the phone counts can look like the bulk of the case. That charging choice is lawful under the statute, and it gives prosecutors leverage in plea talks, because dismissing counts has visible value.
For a person facing charges, this structure means two things. First, the total exposure can climb quickly even though each count carries a modest maximum. Second, the government must still prove each count on its own. Every charged call needs its own evidence tying it to the underlying drug crime. A lawyer defending the case goes through the calls one by one, asking of each recording what it actually shows, who is speaking, and whether the conversation really advanced a drug offense. Weak counts get challenged, and the difference between ten solid counts and ten thin ones can reshape a case.
Penalties under § 843(d)(1): what the law allows
For a first offense, the penalty section, 21 U.S.C. section 843(d)(1), provides that:
"any person who violates this section shall be sentenced to a term of imprisonment of not more than 4 years, a fine under title 18, or both"
For a person with a qualifying prior conviction, meaning a prior conviction under this section or for a felony drug offense under federal drug law that has become final, the same paragraph provides that:
"such person shall be sentenced to a term of imprisonment of not more than 8 years, a fine under title 18, or both"
Three points follow from that language. First, the top number is 4 years per count for a first offense and 8 years per count with a qualifying prior. Second, the statute sets maximums, not minimums. Unlike some trafficking penalties, this charge carries no mandatory minimum prison term. Third, the fine is set by reference to the general federal fine statute rather than a dollar figure in the drug law itself.
Prison is not the only consequence the law allows. A federal sentence can include a term of supervised release after prison. How long that term can be depends on the felony class of the conviction. Under 18 U.S.C. section 3559, an offense with a maximum of:
"less than five years but more than one year, as a Class E felony"
and an offense with a maximum of:
"less than ten years but five or more years, as a Class D felony"
A first offense under section 843(b), with its 4 year maximum, falls in the Class E group, and a repeat offense, with its 8 year maximum, falls in the Class D group. Under 18 U.S.C. section 3583, supervised release can run:
"for a Class E felony, or for a misdemeanor (other than a petty offense), not more than one year"
and:
"for a Class C or Class D felony, not more than three years"
So a first offense can bring up to a year of supervised release, and a repeat offense up to three years, on top of any prison time. Collateral consequences can follow as well, including the loss of certain licenses and difficulties with housing and employment after a federal drug conviction. None of these numbers predict any particular sentence. Judges decide sentences within these ceilings using the guidelines and the facts of each case, and the facts of a case change everything.
How the sentencing guidelines treat a § 843(b) charge
The Federal Sentencing Guidelines give this charge its own section, USSG section 2D1.6, titled for use of a communication facility in committing a drug offense. The Statutory Index in Appendix A of the 2025 Guidelines Manual assigns 21 U.S.C. section 843(b) to section 2D1.6, so there is no doubt which guideline governs.
Section 2D1.6 is short. Its base offense level rule is:
"the offense level applicable to the underlying offense"
In plain terms, the guideline borrows the punishment level from the drug crime the phone call facilitated. If the underlying offense is distribution of a given drug in a given amount, the starting point is the level that amount would produce under the drug quantity table in section 2D1.1. That is why the drug type and quantity still matter enormously even when the charge on paper is only about phone calls.
The commentary adds floors worth knowing. Where the underlying offense level comes from section 2D1.1, minimum offense levels apply based on the drug involved: level 12 at a minimum for drugs such as heroin, cocaine, cocaine base, PCP, methamphetamine, LSD, and fentanyl; level 8 at a minimum where the offense involves flunitrazepam; and level 6 at a minimum otherwise. So even a small-quantity case starts no lower than these floors when the drug falls in one of the listed groups.
Because the guideline keys off the underlying offense, much of the sentencing fight in a phone charge case looks like the sentencing fight in any drug case: what drug, how much, and what role the person played. A person charged only with phone counts tied to a large conspiracy can face a guideline range driven by quantities far beyond anything discussed in that person's own calls, depending on how the court attributes the underlying conduct. Sorting out which quantities fairly attach to which defendant is often the most important work at sentencing. The federal sentencing process page explains how judges move from the guideline calculation to an actual sentence.
How this charge differs from its closest neighbours
Three nearby charges get confused with this one, and the differences matter for both plea talks and trial strategy.
Distribution, under 21 U.S.C. section 841, punishes actually dealing drugs: manufacturing, distributing, dispensing, or possessing with intent to do so. The phone charge punishes facilitating such an act through communication. A person can be guilty of the phone charge without ever touching drugs, and a person who dealt drugs can face both the dealing charge and phone counts for the calls that arranged it. Our drug distribution page covers the dealing side in detail.
Conspiracy, under 21 U.S.C. section 846, punishes agreeing with others to violate the drug laws. It needs an agreement and knowing participation in it, but no overt act. The phone charge needs neither an agreement nor completed drugs. It needs a communication that committed or facilitated a drug felony. Wiretap cases often charge both: the conspiracy for joining the plan and phone counts for the calls made along the way. Our drug conspiracy page explains the agreement element that separates the two.
Simple possession sits on the other side. The sharpest boundary dispute under this statute involves buyers. The Eleventh Circuit's pattern instructions note that the Supreme Court unanimously rejected the government's argument that a buyer who phones a dealer to arrange a personal use purchase facilitates the dealer's felony distribution. The reasoning, as summarized in those instructions, is that a sale needs two sides, and it would be strange to say the buyer on the leniently treated side facilitates the seller. Where the only conduct behind a call is buying a small amount for personal use, this defense can attack the charge at its root. Whether it fits depends entirely on the facts, including what was said and what the amounts suggest, so it needs careful review rather than assumption.
Defenses that arise under this statute
Every case is different, but defenses in phone charge cases tend to cluster around a few questions that come straight from the elements.
Did the person act knowingly and intentionally. The government must prove knowledge and intent, not just that the person's voice is on a recording. Wrong number calls, calls made for someone else without knowing their purpose, and conversations in code the listener did not understand all test this element. Juries decide what a defendant knew from all the circumstances, so context around each call matters as much as the words in it.
Did the communication actually facilitate a drug felony. Facilitation means the call made the crime easier or possible. Calls that went nowhere, calls about lawful matters, and calls the government cannot connect to any specific drug offense leave this element unproven. And where the underlying conduct was only a personal use purchase, the buyer side reasoning described above can mean no felony was facilitated at all.
Was there really an underlying felony. The statute requires acts constituting a felony under the federal drug laws. If the government cannot establish the underlying drug crime, the phone charge built on it falls. This is separate from whether the defendant personally committed that crime. The question is whether the felony the call supposedly served actually existed.
Can the government prove each count it charged. Because each use is a separate offense, the government sometimes charges calls aggressively and hopes the pile pressures a plea. Each count still needs its own proof. Recordings with unidentified speakers, garbled audio, or ambiguous talk get tested count by count.
How was the evidence collected. Phone charge cases are usually wiretap cases, built from months of intercepted calls alongside surveillance and searches. A lawyer reviews how agents obtained the interceptions and the later searches for legal defects, and examines whether each recording is authentic, complete, and fairly attributed to the accused. Challenges of this kind are technical and fact bound, and they succeed only where the facts support them.
One caution about talking your way out of it. Anything you say to agents, on a recorded line, or to others involved in the case can become evidence. The urge to explain is natural and dangerous. Get legal advice before answering questions or agreeing to meet with investigators.
What to do if you are facing this charge
First, do not discuss the case with anyone except a lawyer. Not on the phone, not by text, not with friends or family members who might later be interviewed. The same communication tools at issue in the charge can generate new evidence.
Second, preserve what helps. Save phone records, messages, and anything showing where you were and what you were doing when charged calls took place. Do not alter or delete anything. Write down what you remember about each call while it is fresh, and give those notes to your lawyer, not to investigators.
Third, learn the process. Most federal drug cases move from investigation to indictment through presentment and arraignment and then toward either trial or a negotiated resolution, with sentencing as its own contested phase. Knowing the stages helps you make calmer decisions. The federal drug charges hub page maps the whole landscape these cases sit in.
Finally, get advice early. Charging choices, plea timing, cooperation questions, and sentencing exposure all interact, and early decisions shape later ones. A lawyer who handles federal drug cases can read the indictment, listen to what the recordings actually show, and give you an honest picture of where you stand. This page is general information, not legal advice, and nothing here creates an attorney client relationship. The facts of your case change everything, and only advice about your facts can tell you what to do next.